Bessey PS130 Seaming tool. big and strong PS, BE181016 - For clamping and positioning large and potentially heavy components with a smooth surface, such as artificial stone, ceramic, granite, Corian¨, plastic, sheet metal and glass. Manual vacuum pumps for maximum suction power, and therefore a maximum level of horizontal clamping force up to 1,200 N. Marking ring on the pump lever to permanently check for a reliable vacuum. Practical quick adjustment function for rapid adjustment of the distance between the two suction cups. Vacuum pumps with control function, The required vacuum is generated with only a few movements of the pump à for a maximum vacuum and top clamping force up to 1,200 N. The status of the vacuum can be checked at any time via a marking ring on the pump tappet and brought back up to the maximum by repeated pumping.